package cn.com.wxd.wechat.common.util.fs;

import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;

public class FileUtils {

	/**
	 * 创建临时文件
	 * @param inputStream
	 * @param name 文件名
	 * @param ext 扩展名
	 * @return
	 * @throws IOException
	 */
	public static File createTmpFile(InputStream inputStream, String name, String ext) throws IOException {
		FileOutputStream fos = null;
		try {
			File tmpFile = File.createTempFile(name, '.' + ext);
			tmpFile.deleteOnExit();
			fos = new FileOutputStream(tmpFile);
			int read = 0;
			byte[] bytes = new byte[1024 * 100];
			while ((read = inputStream.read(bytes)) != -1) {
				fos.write(bytes, 0, read);
			}
			fos.flush();
			return tmpFile;
		} finally {
			if (inputStream != null) {
				try {
					inputStream.close();
				} catch (IOException e) {
				}
			}
			if (fos != null) {
				try {
					fos.close();
				} catch (IOException e) {
				}
			}
		}
	}

}
